package cn.kgm.tes;

import java.util.HashMap;
import java.util.Map;

/**
 * Create by kappi on
 * 2021/9/2/002 20:52
 */
public class NullList {
    public static void main(String[] args) {
        Map<String,Object> err = new HashMap<>();
        err.put("money",null);
//        System.out.println(err.get("money") instanceof String && StringUtils.isEmpty(err.get("money").toString()));
    }
}
